The goal of this project was to create an OTA mechanism which shows a proof of concept on how this could operate in the real world.

For this demo an Ubuntu machine was used. Below are the steps to install the Mosquitto MQTT broker and the necessary packages.

sudo apt-add-repository ppa:mosquitto-dev/mosquitto-ppa
sudo apt-get update
sudo apt-get install mosquitto mosquitto_clients
sudo apt clean

To start the service: sudo service mosquitto start

To customize your Mosquitto broker please edit the file in /etc/mosquitto/mosquitto.conf

Customization is necessary to set ports for each of tcp and websockets transport methodology.

To setup the client all you need is Python. It should be vended by default with the Ubuntu distribution but in case it isn't, follow the steps below:

sudo apt-get update
sudo apt-get install python3

Once you have Python up and running you will need the paho-mqtt library. This can be installed using pip

python3 -m pip install paho-mqtt

Once all of that is done, please pull down the files from this GitHub link:

Clone this repo on your broker and client devices using:

git clone https://github.com/amalik18/IoTUpdates.git

On the Broker instance, run the subscribe.py file

python3 subscribe.py

On the Client side, run the publisher.py file

python3 publisher.py